fix release script tag handling

build/release.sh

@@ -30,18 +30,18 @@ if [[ $REPLY =~ ^[Yy]$ ]]; then
   cd packages/vue-template-compiler
   npm version $VERSION
   if [[ -z $RELEASE_TAG ]]; then
-    npm publish --tag $RELEASE_TAG
-  else
     npm publish
+  else
+    npm publish --tag $RELEASE_TAG
   fi
   cd -
 
   cd packages/vue-server-renderer
   npm version $VERSION
   if [[ -z $RELEASE_TAG ]]; then
-    npm publish --tag $RELEASE_TAG
-  else
     npm publish
+  else
+    npm publish --tag $RELEASE_TAG
   fi
   cd -
 
@@ -54,8 +54,8 @@ if [[ $REPLY =~ ^[Yy]$ ]]; then
   git push origin refs/tags/v$VERSION
   git push
   if [[ -z $RELEASE_TAG ]]; then
-    npm publish --tag $RELEASE_TAG
-  else
     npm publish
+  else
+    npm publish --tag $RELEASE_TAG
   fi
 fi